Machine for sweeping hot sheet bars



Aug. 18,1925.`

P. NELSON MACHINE FOR SWEEPING HOT SHEET BARS Filed April 22, 1924lilatentet'd Aug. 18, 19254.

l UNITED STATES PATENT OFFICE'.

PAUL NELSON, 0F MORGANTOWN, WEST VIRGINIA.

MACHINE FOR SWEEPING HOT SHEET BARS.

Application led .April 22, 1924. Serial No. 708,215.

To all wkomz't may concern:

Be it known that I, PAUL NELSON, a citizen of the United States,residing at Morgantown, in the county of Monongalia and `be used forsweeping the dust and scale and other foreign substances from thesurfaces of hot bars that the bars may be put in proper condition forrolling into sheets.

In the present method for preparation7 it is practice to sweep the barsby hand and with a wire ybroom in order to remove the foreignsubstances. This method is slow in that but one side of the bar may beswept at the same time and there is much negligence in that workmenshirk the labor and will sweep the bars only when they are ycomlled todo so.y In the present inventi'on th side surfaces of the bar areswleptV simultaneously and consequently much time and labor is saved.

With the above objects in view, the machine comprises a frame havingcorrugated feeding rolls journalled at one end and corrugated ejectingrolls journalled at the opposite end portion thereof. Both of these setsof rolls are operatively connected together for simultaneous rotation.Means are provided for spacing the ejecting rolls at suitable distancesapart in order that they may receive between them bars ofdifferentt-ransverse thicknesses. Cylindrical wire brushes arejournalled upon the frame between the feeding and ejectin rolls and areadapted to brush the opposite side surfaces of the bars as they passover the bed of the frame from the feeding to the ejectingl rolls. Hoodsare provided around the outer parts of the brushes and prevent theparticles of dust and the scales which are removed from the bars frombeing thrown into the air. Means are provided and located between thefeeding rolls and the brushes for directing fine streams of water uponthe opposite side surfaces of the bars in order that the dust and thescales may be loosened thereon beforeA such substances and material areencountered by the brushes. y

` In the accompanying draiiving: y

Figure 1 is a side elevation of the machine for sweeping hot steel barswith parts thereof lbroken away and parts shown in section.

Figure 2 is a transversel sectional view of tllie machine cut on theline 2-'2 of Figure Themachine for sweeping hot steel bars comprises aframe lhaving a bed 2 and provided at one end with a shelf 3, the uppersurface of which is located in the planev parallel with and below theplane in which the upper surface of the bed 2 lies. The shelf 3 isspaced from the upper surface of the bed 2 by a vertical shoulder 4. Amotor 5 is mounted upon the frame 1 and its shaft carries a gear wheel(i which meshes with the teeth of a -ear wheel 7 mounted upon a shaft 8.The shaft 8 vis journalledl in the 'frame 1 and is disposed transverselyacross the bed 2 and spaced from the upper surface thereof. Gear wheels9 are mounted upon the end portions ofthe shaft S and mesh with gearwheels 10 mounted upon a shaft 11 which is journalled in the frame 1 anddisposed transversely of the bed 2 and below the plane .of the uppersurface thereof. A gear wheel 12 is mounted upon the shaft 11 and islocated at the opposite side of the frame from that side at. which thegear wheel 7 is located. The gear Wheels 7 and 12 are of .the samediameter. Levers 13 are pivotally mounted upon the shaft 8 and levers 14are pivota-lly mounted upon the shaft 11. Screws 15 and 16 arejournalled in the frame l and bear against the free end portions of thelevers 13 and 14 respectively, and as best shown in Figure 1 of thedrawing. It is obvious that by turning the screws 15 and 16, the freeend portions of the levers 13 and 14 maybe moved toward each other oraway from each other.

Corrugated rolls 17 and 18 are carried by the shafts 8 and 11respectively. The roll 17 is disposed above the plane of the uppersurface of the bed 2 and the upper portion of the periphery of the .roll18 is disposed approximately at the level of )the plane of the uppersurface of the bed 2. Shafts 19 and 20 are journalled in the levers 13and 14.- respectively, and the shafts respectively carry cylindricalbrushes 21 and 22, the

` the frame 1.

bristles of which are formed from strands of wire radially disposed withrespect to the shafts 19 and 2t). rIhe outer portions of the brushe:l 21and 22 are encased within hoods 23 and 24 and pneumatic means (notshown) may be connected with the said hood for blowing the dust andforeign substances which are `removed by thebrushes from the steelplates as hereinafter described. A' guard or guide member 25 is carriedby the levers 13 and is disposed between the hood 23 and that end of thebed 2 at which the shelf 3 is located. A gear wheelI 26 is carried bythe shaft 19 and meshes with the gear wheel 7. A gear wheel 27 iscarried by the shaft 20 and meshes kwith the gear wheel 12. Thus meansare provided for rot-ating the brushes 21 and 22 from the shafts 8 and11 respectively. A water pipe 28 is disposed transversely of the bed 2below the guard or guide 25.

Bearing blocks 29 are mounted for vertical sliding movement in the frame1 and a shaft 39 is journalled for rotation in the said bearing blocks.A sprocket wheel 31 is mounted upon the shaft 30 and a sprocket wheel 32is mounted upon the shaft 8. A sprocketchain 33 is trained around thesprocket wheels 32 and 31 and is adapted to transmit rotary movementfrom the shaft 8 to the shaft 30. A shaft 34 is journalled in Gearwheels 35 are mounted upon the shaft 34 and mesh with gearl wheels 36mounted upon the shaft 30'. Corrugated rollers 37 and 3S are carried bythe shafts 30` and 34 respectively. The steel bars to be brushed areindicated at 39. A foot operated treadle or lever 40 is fulcrumed uponthe frame 1 and its upper end is disposed approximately at the uppersurface of the shelf 3 in the vicinity of the shoulder 4.

In operation, a steel bar 39 is laid upon the shelf 3 with its edge incontact with the shoulder 4 whereby the longitudinal dimension of thebar 39 is disposed at a right angle to the path of movement of the barover the bed 2 of the frame 1. The operator then presses down the outerend of the lever 40 with his foot, whereby the inner end of the saidlever is raised and the inner edge of the bar 39 is lifted along theshoulder 4 and disposed above the upper surface of the'bed 2 of theframe. The bar 39 is then moved inwardly toward the rolls 37 and 38 andis gripped between the said rolls and carried along the bed 2.' Streamsof water are directed from the pipe 28 against the opposite sidesurfaces of the bar 39 thus loosening the dust and theI scales atthesaid side surfaces of the bar. The bar 39 then passes between thebrushes 21 and 22 and the loosened scales and dust are removed by thesaid brushes. The guard or guide 25 prevents the scales or dust frombeing cast upon the feeding rolls. After one bar has passed between thefeeding roll it is forced between the brushes by the next bar following.`When thelever 40 is depressed the lower bar is elevated so that itsside edge clears the upper edge of the shoulder 4 and consequently thesaid bar may be mtved over the bed and between the feeding ro s.

Freni the foregoing description taken in conjunction with theaccompanying draw'- ing, it will be seen that a machine of simple anddurable structure is provided and that the same is especially adapted tobe used economically and to advantage for removing dust, scales andother foreign substances simultaneously from opposite sides of a steelbar preparatory to placing the bar in condition for rolling into thinplates.

iHaving described the invention, what is claimed is :l

A machine for brushing bars comprising a frame, eject'ing rollsliournalled thereon, means for rotating the ejecting rolls, leverspivoted upon the axes of the ejecting rolls, means mounted upon theframe for moving the levers toward and away from ,each other, brushesjournalled in the levers,

means for rotating the brushes from the ture.

v PAUL NELSON.

